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Knurr, Benjamin J.; Hauri, James F. – Journal of Chemical Education, 2020
For the past century, humans have been increasingly dependent on plastics, but have not developed adequate disposal practices. In this lab, students are asked whether burning plastic for energy seems like a reasonable disposal technique. To answer the chemical aspects of this question, students use bomb calorimetry to quantify the combustion…
Descriptors: Plastics, Science Instruction, Science Laboratories, Chemistry
Zhou, Hua; Zhan, Wang; Wang, Liuyang; Guo, Lijun; Liu, Yun – Journal of Chemical Education, 2018
To inspire upper-division undergraduate students to gain a deeper understanding of biorefinery, an experiment related to biofuels and lignin-based sunscreen products from corncob was performed in multiple offerings of a summer-semester class. Specifically, corncobs were pretreated with 1% H[subscript 2]SO[subscript 4] to obtain hemicellulose…
Descriptors: Undergraduate Students, Science Instruction, Chemistry, College Science
Habeeb, Zeeshan; Lewis, Rubina; Liu, Shuangyuan Michael; Prosser, R. Scott – Journal of Chemical Education, 2020
A modular experiment for upper-level undergraduate students is presented, featuring the product cycle and process evaluating the quality and quantity of biodiesel obtained from a microalgae feedstock grown under carbon-supplemented and nutrient-deprived conditions. Batch reactors are used to cultivate and harvest microalgae, which undergo…
Descriptors: Science Instruction, College Science, Undergraduate Study, Fuels
Leibfarth, Frank A.; Russell, M. Grace; Langley, David M.; Seo, Hyowon; Kelly, Liam P.; Carney, Daniel W.; Sello, Jason K.; Jamison, Timothy F. – Journal of Chemical Education, 2018
This laboratory experiment leverages the pedagogical value and multidisciplinary nature of biodiesel production from vegetable oil to introduce students to continuous-flow chemistry, a modern and rapidly growing approach to chemical synthesis. An interdisciplinary approach exposes students to the practical and conceptual aspects of modern…
Descriptors: Undergraduate Students, Organic Chemistry, Science Experiments, Laboratory Experiments
Gomes, Diana; Sousa, Angela; Passarinha, Lui´s A. – Journal of Chemical Education, 2021
Enzymes are widely applied in different industries, like pharmaceutical, food, biofuel, and waste valorization. However, the enzyme operating conditions are very limited. So, in most industrial processes, enzymes are not efficient, due to the use of harsh conditions, like organic solvents, extreme pH, and temperature. Immobilization arises as a…
Descriptors: Science Instruction, Science Laboratories, Laboratory Experiments, Science Experiments
El Seoud, Omar A.; Loffredo, Carina; Galgano, Paula D.; Sato, Bruno M.; Reichardt, Christian – Journal of Chemical Education, 2011
The substitution of petroleum-based fuels with those from renewable sources has gained momentum worldwide. A UV-vis experiment for the quantitative analysis of biofuels (bioethanol or biodiesel) in (petroleum-based) diesel oil has been developed. Before the experiment, students were given a quiz on biofuels, and then they were asked to suggest a…
Descriptors: Fuels, Science Instruction, Science Experiments, Laboratory Experiments
Blackburn, J. Joey; Robinson, J. Shane; Kacal, Amanda – Journal of Agricultural Education, 2015
The purpose of this exploratory, experimental study was to determine the effects that the type of reflection-in-action and students' cognitive style had on content knowledge of preservice agriculture teachers (N = 57) at Oklahoma State University. Students' cognitive style was assessed using Kirton's Adaptation-Innovation Inventory (KAI). Students…
Descriptors: Reflection, Cognitive Style, Creativity Tests, Problem Solving
Blatti, Jillian L.; Burkart, Michael D. – Journal of Chemical Education, 2012
Microalgae have emerged as an attractive feedstock for the mass production of renewable transportation fuels due to their fast growth rate, flexible habitat preferences, and substantial oil yields. As an educational tool, a laboratory was developed that mimics emerging algal biofuel technology, including the extraction of algal lipids and…
Descriptors: Chemistry, Fuels, Energy, Laboratory Experiments
Epstein, Jessica L.; Vieira, Matthew; Aryal, Binod; Vera, Nicolas; Solis, Melissa – Journal of Chemical Education, 2010
In this series of experiments, we mimic a small-scale ethanol plant. Students discover that the practical aspects of ethanol production are determined by the quantity of biomass produced per unit land, rather than the volume of ethanol produced per unit of biomass. These experiments explore the production of ethanol from different sources: fruits,…
Descriptors: Organic Chemistry, College Freshmen, Laboratory Experiments, Science Process Skills